{
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 207,
    "wlbName" : "15/5-3",
    "wlbHistory" : "\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cb\u003e\u003cspan lang=EN-GB\u003eGeneral\u003c/span\u003e\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eWell 15/5-3 was drilled in the Vilje\r\nSub-basin between the Enoch and the Gudrun fields in the North Sea. The primary\r\nobjective was to test possible sandstone reservoirs of Triassic age. A\r\nsecondary objective was to test the Middle Jurassic Sleipner Formation. The\r\nwell was planned to penetrate approximately 400 m into the Triassic and had a\r\nprojected total depth of 4200 m.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cb\u003e\u003cspan lang=EN-GB\u003eOperations and results\u003c/span\u003e\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eAfter two unsuccessful spuds, wildcat\r\nwell 15/5-3 was spudded with the semi-submersible installation Nortrym on 21\r\nAugust 1980 and drilled to TD at 5042 m in shale and sandstones of Late Permian\r\nage. Hole reaming was necessary in intervals below 2250 m, otherwise the well\r\nwas drilled without significant problems or incidents. The hole was good and\r\nvertical down to ca 3000 m. Below 3200 m the hole deviation increased to\r\nbetween 3° and 8°. The well was drilled with seawater and hi-vis sweeps down to\r\n615 m, with a seawater/Dextrid mud from 615 m to 2029 m, with\r\nseawater/polymer/Q.Broxin mud from 2029 m to 3834 m, and with a salt-saturated\r\nDextrid mud from 3834 to TD. \u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eNone of the objective sandstone\r\nreservoirs were found in the well. The Draupne Formation was encountered at\r\n3665 m. After penetrating 135 m of Draupne shales, the well encountered 1050 m\r\nof Zechstein evaporites. At this point, it was decided to deepen the well\r\nfurther in order to explore the pre-salt rocks. Below these, undefined shales\r\nand thin sandstones of Late Permian age were found. \u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eTraces of oil in the mud was observed\r\nduring P&A - see below. Poor oil shows were recorded in thin limestone\r\nstringers at 2850 m, 2920, and in the interval 3355 to 3365 m. No shows were\r\nrecorded in the pre-Zechstein shales and sand se",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}